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. Author manuscript; available in PMC: 2013 Jun 4.
Published in final edited form as: SIAM Rev Soc Ind Appl Math. 2011 Nov 7;53(4):683–720. doi: 10.1137/090774288

Fig. 3.2.

Fig. 3.2

A 2D schematic illustration of the multiple image approximation of the reaction field for a dielectric sphere of radius a embedded in a bulk solvent. A source charge q is located at rs, and its reaction field at r inside the sphere due to the bulk water is represented by the potential of discrete point image charges on a ray starting from the Kelvin image point along the radial direction of rs.